EP 0751095 A1 19970102 - Vapour recovery system in fuel filling installations
Title (en)
Vapour recovery system in fuel filling installations
Title (de)
Rückgewinnungseinrichtung für Dämpfe in Kraftstoff-Abgabevorrichtungen
Title (fr)
Système de récupération de vapeurs dans une installation de distribution de carburants
Publication
Application
Priority
- EP 93201921 A 19930701
- US 94522292 A 19920915
Abstract (en)
A system for effective vapour recovery in fuel filling installations (1,2) without seal members between the delivery gun (11) and the filler pipe (3) of the vehicle to be refuelled, comprising control means (15) which consist in a pulse converter (22) which is fed at its input by the electrical pulses of frequency proportional to the variable volumetric delivery rate, to give at its output a corresponding series of electrical pulses having the same said frequency but of constant but adjustable set duration, which are fed to the input of an operational unit which at its output provides their mean value indicative of the volumetric rate of delivery, this being fed as first input signal to a comparator together with a second analog signal indicative of the speed of rotation of a positive displacement pump drive motor (17) and hence indicative of the volumetric flow rate of the draw-in vapour, the output of said comparator being fed to the control unit of said motor to maintain the motor speed constant when said two input signals to the comparator are of equal value and to increase or reduce said speed when said first signal is respectively greater or less than said second signal. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B67D 7/0486 (2013.01 - EP US)
Citation (search report)
- [A] DE 9110431 U1 19911205
- [A] EP 0461770 A1 19911218 - GILBARCO INC [US]
- [A] EP 0460864 A1 19911211 - TOKYO TATSUNO KK [JP]
- [A] DE 4038579 A1 19920611 - SCHONDORF HANS JOCHEN DIPL ING [DE], et al
- [PA] EP 0511599 A1 19921104 - DRESSER IND [US]
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0588393 A2 19940323; EP 0588393 A3 19940511; BR 9303011 A 19940322; CN 1084485 A 19940330; CZ 134493 A3 19940413; EP 0751095 A1 19970102; JP H06100099 A 19940412; US 5333655 A 19940802
DOCDB simple family (application)
EP 93201921 A 19930701; BR 9303011 A 19930727; CN 93108628 A 19930707; CZ 134493 A 19930702; EP 96112396 A 19930701; JP 19267093 A 19930708; US 94522292 A 19920915